Shuttle



May ,14, 1940. y

w. s;l JENNINGS 2,200,843

SHUTTLE Filed May 19, 1937 arrangement including N @more UNITED STATES PATENT OFFICE This invention vrelates the self-threading type an William E. Jennings, signor to U. S. Bo Lawrence,

Island Application May A 11 Claims.

to weaving shuttles of Mass.,

d more particularly to an arrangement of the component parts of such a shuttle to provide an effective thread-guiding the yarn delivery eye, ing of the shuttle.

In accordance with guide block may be arran dental upward movemen the delivery eye, while ment of parts permitting smooth wear Without liability of the thread c metal of the guide block as and forth. Preferably a part of to cooperate with a the guide block in affording a trap upward movement of the yarn out eye, while allowing th during the self To permit these of the thread over may be arranged ment of the yarn of the shuttle. the metal of the guide with a portion above a yarn trap asociated with thus to prevent unthreadlooms, this shuttle being provided this invention, the thread aiiording block is pre the delivery to prevent of the delivery e ready downward move- -threading action desirable results, erably provided eye, which in ged to prevent the accit of the thread out of an arrangethe normal movement -resistant surfaces utting into the the shuttle moves back the shuttle itself portion of the effect affords an outer lip with a reentrant part disposed inwardly from this of the wood or like projection lip, while a hornthe like o the body of the shuttle extends into this reentrant portion of the guide block. Thus parts are provided to h which the yarn define a tcrtuous chan may move when nel throng rst passing to the delivery eye,

the tortuous contour of this channel being effective in preventing the upwar metal of the block yarn. The

may be cut away to walled open passage provide which may be forme A third guide pin may terial.

d movement of the below this portion aiord a relatively smooth d with two guide pins d oi wear-resistant maarranged in the body portion of the shuttle to cooperate with one of the guide pins ing block in dening tle, the horn-like projection ci the projecting over and rearwardly from the third guide pin.

In the accompanying drawing:

Fig. 1 is a side elevation of an improved shuttle with this invention',

Fig. 2 is a plan view o tle shown in Fig. 1;

Fig. 3 is a bottom view of the carried by the thread-guidthe eye portion of the shutshuttle body the end portion of constructed in accordance f the portion of the'shut- `guide block employed in the shuttle shown in Figs.v l and 2;

Fig. 4 is a iront Fig. 5 is an enlarg Fig. 1; and

elevation of the ed section on guide block; line 5-5 of tion of Carl P. Park,

threadpassage and a transverse continuation .livery eye'.

v terial.

west Warwick, n. I., asbbin & Shuttle Company, a corporation of Rhode 19, 1937, Serial No. 143,436

Fig. 6 is a p1an View of the end` of me body p0rtion of the shuttle with the guide block removed. In the accompanying drawing', which illustrates the principles of the present invention, the nuany other suitable material. The side of the Shuttle body I is provided with'the usual longitudinally extending shallow thread groove 8 having a forward extension ASi at one side 0i the threadv delivery eye and an extension 9a at the opposite side thereoiw The chamber 5 is provided with-a lateral extension 5iL between these portions 9 and 9a of the exterior thread groove. Thel block 6 may have which seats upon the bottom of chamber 5 of the shuttlebody I and may have spaced sidewalls II and I2 between which isfthe' longitudinally'ex'- tending portion I3 of the yarn guidepassag'e. Near the entrance end of this passage suitable tension plates I1 may engage the yarn. These plates may conveniently be arranged in any suitable manner such as that disclosed in the copending United States applica- Serial No. 101,630.

The block 6 may be provided with a substantially horizontal guide pin 29, Figs. 3 and 4, ar-

ranged in the longitudinal portion I3 of the yarn passage and preferably at a point Just `forward of the tension plates I1,in the mannerdisclosed in the abvove-identied Park application, this pin conveniently being at such an elevation that the projected axis of the bobbin 4 lies substantially tangential to its upper surface. The block Ii of a weaving shuttle with a l chamber s,

be provided yieldably tol I This block may conveniently be formed oi metal or of a flat bottom surface I0 is also preferably provided with an inner subu Vstantially vertically disposed guide pin 30 at the I3 of the I6 to the thread dejunction of the longitudinal portion of said passage which leadsformed of porcelain or other wear-resistant ma- The block 6 has a lateral extension I5a which is disposed in the upper part of the extension 5a ofthe chamber 5. This extension I5a of the block is provided with convexly curved lateral and upper outer faces which merge into The pin 30 may conveniently be r eachother and which substantially conform in curvature to the curvature forwardly'directed horn-like projection B17-which is separated by an upwardly-ared recess 2'! from a relatively small forwardly directed pointed projection 28 from the rear part of the' wall I2 of the guide block which overlies the major por-I tion of the width of the longitudinal guide passagel3. Y

'I'he extremity of the horn-like projection Gb is provided with a downwardly curved tip 6, Fig, 1.

of the leg portion of the extension Gais provided with a cavity or reentrant part 6d, Fig. which cooperates with the outer` lateral and upper surfaces of this portion of the block in defining a relatively thin, curved lip or ange 6e forming the upper wall Vof the cavity l and "whichV extends 'upwardly along the side and top ofthe extension 6? and which merges into the relatively thicker edge of the forward part of the horn-like projection Bb and its downturnedtip 6C. Below the cavity 6d the metal of the block may be provided with aA smoothly finished surface which gradually curves into the lower surface Gf of the leg portion of extension 6a.

'I'he block S is also provided with a lower lateral isconnected to the upper eX- tension 6a by a metal wall 3i which engages thev wall of the lateral extension 5a of the chamber 5, Fig. 5. A second guide pin 34 is disposed adjoining the outer end of the metal wall 3| and slightly inwardly from the overhanging lower edge of the outer extremity of the lower latof the block. The wall Il of the convexly curved surface of the adjoining part of the tip 6c of `the extension 6b of the block, Figs. 3 and 4..

The shuttle `body preferably is provided with a rearwardly directed horn-like projection or guard 36 which has a tip portion 3bb extending into the cavity 6d of the guide block in close juxtaposition the horn 36 may be convexly curved while its lower surface may be nearly planar.

A third wear-resistant guide pin 31 is disposed between 'the inner portion of the horn 36 and the lower Wall of the chamber extension 5a, as show-n in Figs.'1 land 5. Accordingly the guide pins 34 and 37 define the sides of the'yarn thread delivery eye.

As showin particularly in Fig. 5, the walls of 6a also comprises an inwardly and v past this portion of the block. It is evident `that when the yarn `is in the in- `the end of the chamber, the

sion 2a of wail i2 of the block and the wail H thereof and passing through the narrow space between the tip 6c of the extension 6b andthe reentrant portion of the extension 35 of the block. From here the yarn may extend alongv the groove Fig; 2, which illustrates the position of the yarnduring the rst pick. `When the shuttle `then moves in the Opposite direction, the

Ayarn nds its way downwardly beneath the horn the narrow tortuous channel beand the rearwardly directed 6b and through tween the lip (ie horn-like projection 38 of the shuttle body, passing the tip 361 of this horn, thus finding its way through the V-shaped channel shown in Fig. 5 and then being received by the delivery eye. Thereupon the thread becomes lodgedin its normal channel so that it passes between the cooperating faces of the tension plates l'i over the horizontal guide member 29 and about the guide pin 30, alternately engaging the guide pinsl v@il `and and dash lines 'in Fig. 5.

During the movement of the yarn fromv thev pin 3i! along either l any depending metal projec- .tion or ,the like so that liability of cutting grooves in the metal of the block 6 is avoided. Asthe its position in engagement with zontal surface of sion E and of the tip 36b .of the horn, these parts being in spaced roverlapping relation so that the yarn can not find its way upwardly out of the ldelivery eye. In this connection it may be noted that the lower substantially horizontal surface ing its movement in the opposite .direction it may be guided by the curved lower corner 4oi -the lip 6e termediate position indicated by dot and dash fectively prevented.

I claim:

l. A self-threadingvweaving shuttle comprising a bobbin-recei'ving chamber, `a ya-rnpassage at the leg portionof the exten-k the thread may pass to be received at the delivery eye, one of the parts providing a generally V- shaped cavity above the delivery eye, a cooperating part providing a portion projecting into said cavity in closely spaced relation to the walls thereof, so that a channel of generally V-shaped form in horizontal section is afforded above the delivery eye.

2. A self-threading shuttle comprising a body portion, a thread guiding block disposed in a recess of the body portion, said block-providing a longitudinal yarn passage provided with a transverse portion leading to the delivery eye, the block comprising a lateral extension having a downwardly directed leg whose lower surface overhangs the delivery eye, the outer lateral and upper suriacesof said extension being so shaped as to form a thin lip leading upwardly and forwardly from the delivery eye, the material of the body portion of the shuttle having a rearwardly directed horn-like projection whose tip is concealed behind said lip of the block and which is spaced from the lip to provide a threading passage leading to the delivery eye.

3. A self-threading shuttle comprising a body portion, a thread guiding block disposed in a recess of the body portion, said block providing a longitudinal yarn passage provided with a transverse portion leading to the delivery eye, the block comprising a lateral extension having a lower surface which overhangs the delivery eye, the material of said extension having therein a forwardly open cavity whose outer wall extends upwardly and forwardly from the delivery'eye, the material of the body portion of the shuttle comprising a rearwardly directed horn-like projection whose tip is disposed within the cavity inthe block and spaced inwardly from the outer wall of the cavity thereby to provide a threading passage leading to the delivery eye.

4. A self-threading shuttle comprising a body portion, a thread guiding block disposed in a recess of the body portion, said block providing a longitudinal yarn passage provided with a transverse portion leading to the delivery eye, the block comprising a lateral extension having a lower surface which overhangs the delivery eye, the material of said extension having therein a forwardly open cavity whose outer wall extends upwardly and forwardly from the delivery eye, the material of the body portion of the shuttle comprising a rearwardly directed horn-like projection whose tip is disposed in closely spaced relation to the outer wall of said cavity to cooperate therewith in defining a horizontally tortuous channel through which the thread may move into the delivery eye, a wear-resistant guide pin on the block about which the thread turns in moving from the longitudinal passage to the eye, a pair of guide pins supported respectively by the block and body portion and defining respectively the opposite sides of the delivery eye, the projection of the block and the cooperating extension of the body portion aiording substantially planar surfaces above said eye, the block and body portion providing an open uninterrupted passage between the first-named pin and said eye.

5. A self-threading shuttle comprising a body portion, a thread guiding block disposed in a recess of the body portion, said block providing a longitudinal yarn passage and having a lateral extension extending toa delivery eye, said extension comprising a horn-like projection having a convexly curved outer andupper surface and being provided with a forwardly .open cavity.

above the delivery eye, the extension including an outer lip which forms the outer wall of said cavity, the material of the body portion providing a cooperating horn-likev extension with a tip disposed in spaced overlapped relation to said lip to cooperate with the walls of said cavity in dening a tortuous channel through which the thread may move into the delivery eye, the lower part of said projection extending below the adjoining part of the horn-like extension and the lower end of said lip providing a gradually curved lower corner below the tip of said extension.

6. A self-threading weaving shuttle comprising a body portion having a bobbin-receiving chamber, a thread-guiding block disposed in a recess of the body portion, said block providing a longitudinal yarn passage and having a lateral extension extending to a delivery eye, a guide pin supported by the block for defining one side of the eye, a guide pin supported by said body portion and defining the opposite side of said eye, a thread guide pin about which thread may normally turn in passing from the longitudinal passage to said eye, said extension of the block affording a horn-like projection with convexly curved outer and upper surfaces and with a downturned tip spaced inwardly from and above said eye, a lip extending from said tip along the edge of the extension and terminating in a curved corner above the delivery eye,the material of the body portion providing a cooperatinghornlike extension with a tip disposed over the eye, said lip being in spaced overlapping relation to said extension 'of the body portion, said lastnamed extension and the extension of the block providing lower surfaces to define the upper wall of the delivery eye, said corner being disposed slightly below the adjoining lower surface of the projection of the body portion, thereby to engage` a rearwardly moving but upwardly stressed thread with a cam-like action.

7. Automatically threading loom shuttle provided with a threading block having a downwardly extending leg portion, the lower end portion of which forms part of the side delivery eye, and a guard formed by the wood of the shuttle and extending back of and in overlapping relation with the leg portion of the threading block with a space between to permit the lling thread to pass between the two and thereafter be prevented from escaping from the side delivery eye during weaving.

8. An automatically threading loom shuttle provided with a metal threading block having a downwardly extending leg provided with a straight terminal end to form part of the threading eye and the wood of the shuttle contrived to form another portion of the side delivery eye with the end of the shuttle wood extending rearwardly back of the lower edge of the leg with a space between to permit complete threading of the shuttle and thereafter acting as a guard to prevent unthreading of the shuttle during weaving.

9. An automatically threading loom shuttle having a threading block provided with a downwardly extending leg, the lower end of which forms a part of the side delivery eye and the wood of the shuttle being cut to provide the complemental portion of the side delivery eye of slightly greater height than the end of the leg with the end portion of the wood of the shuttle extending back of the lower edge of the leg with a space between for the entrance of the lling thread ,extension extending to a above the deliveryeye,

`-duringthreading kand forming a guard to prevent the `llling thread from lescaping from the side ,delivery eye during weaving.

1-0. A self-threading shuttle comprising a body portion, a thread guidi-ng block vdisposed in a recess :of the body portion, said block providing a longitudinal yarn passage and having `a lateral delivery eye, said extension affording a horn-like projection with a `convexly curved outer and .upper surface, a cavity the extension providing an outer lip extendingalong said cavity, the material of the body portion providing a cooperating horn-like extension with a rtip disposed in spaced overlapped relation to said lip Yto cooperate with the walls of said Acavity .in dening a torvtuous lchannel through which the thread may .mo-ve Vinto the delivery eye, the lower part of said projection extendingbelow fthe adjoining partof the'horn-like extension and the lower end of vsaid lip providing a gradually curved lower corner .below the tip of said extension.

,-block mounted -in and extending .back of amara@ 11. In za loom shuttle, a shuttle kbodyrecessed to provide a longitudinal thread passage and a transverse thread said recess, said block having a thread-retaining portion overlying -said longitudinal thread passage and having a transversely .disposed wing extending `downwardly to said transverse thread passage at the side of the 7shuttle `and having its lower edge forming the upperl side of said thread passage, and a thread-retainingtelement positioned in vsaid shuttle in advance of said wing andcooperating therewith to provide anarrow transverse threading slot, said retaining element having -a rearwardly elongated portion having a warped 4the lower portion of said vwing and longitudinally overlapping the threadguiding forward edge thereof, and .said element .and wing cooperating .to prevent vunthreading of the shuttle.

WILLIAM E. JENNINGS.

thread-guiding surface passage, aA separate threader 

